... 25mm NIut and bolt:Specifications:Material:35# 45# steel.40Cr.35Crmo. Finish:Black or zinc plated or HDG Standard:DIN931/933/912 ... :4.8/8.8/10.9 Features: 1) Standard: DIN, GB, JIS, ANSI, Non-standard 2) Material: Carbon steel, stainless steel ,aolly ... ,B.S.W916) ,high strength bolts stud bolt, U bolt , T bolt, carriage bolt(DIN603), threaded rod(DIN975), anchor bolt(DIN529,IFI136, GB/T799), square head ...